Cannot stream multimedia from Win8 computer

My TV (vai a BluRay box) finds and displays photos, videos, and music that is saved on my Win7 computer. It finds the name of my Win8 computer but will not display multimedia. My Win7 computer and my Ubuntu computer both find and exchange files with my Win8 computer (now, after hours spent with MS); naturally they will play/display multimedia files on the Win8 machine.

I have no idea what I must do to make the Win8 machine accessable to my TV. When I look at the firewall settings, I see things like Network Discovery and Media Center Extenders, but I don't know if they are factors here or not. I tried turning the firewall off, but that did not help.

I have set all of the advanced sharing settings to the least restrictive settings. I have set permissions on all of my data drives to the least restrictive settings "everyone," access and change allowed. Media Streaming says "all devices are allowed to access your shared media." For some reason, the Win8 computer is listed 5 times on the Media Streaming page. I can try adding permissions to more folders. I already have one folder with permissions and it is not seen by the TV.